Komatsu 420

Types of Komatsu 420

The Komatsu 420 is a well-constructed bulldozer model with heavy duty and reliable performance. It borrows heavily from the Komatsu D30-39 series in structure but is a more massive model. There are several types of bulldozers under the Komatsu 420 series:

• Komatsu 420 Dozer

  The Komatsu 420 Dozer is an extraordinary machine. Its heavy construction helps it to withstand the rigors of earth-moving tasks, which makes it a preferred choice in large-scale projects that demand consistent performance under challenging conditions. Many buyers select it for major infrastructure developments, mining operations, or large land-clearing initiatives where only a dozer of exceptional capacity can meet the task.

• Komatsu 420-3 Dozer

  Like its predecessors, the Komatsu 420-3 dozer also boasts a sturdy metal frame for superior durability even in heavy use and demanding conditions. In terms of performance, the machine adopts a diesel engine that provides sufficient horsepower for various earth-moving tasks. It employs a hydrostatic transmission system for smooth and reliable power delivery. This bulldozer is designed with a metal blade in the front, which is controlled by hydraulic arms to varying the heights and angles of the blade.

• Komatsu 420-5 Dozer

  As an upgraded model, the Komatsu 420-5 bulldozer comes equipped with more advanced diesel engines and transmissions. Its operational efficiency is better than ever, and its heavy metal frame stands the test of time under pressure, ensuring users enjoy a longer, more stable use period.

• Digger with Komatsu 420

  The digger loader under the Komatsu 420 series is entirely rugged to endure the everyday rigors of loading, digging, and heavy lifting tasks. Its exceptionally heavy-duty body and broad stance confer unparalleled stability, which makes it an ideal companion for large-scale digging and loading operations that require consistent reliability and durability.

Specifications & Maintenance of Komatsu 420

Specifications

• Gross Weight

  The gross weight of the Komatsu WA420-3 is around 15,800 kg. It's 18,800 kg for the WA420-3E0 model.

• Engine

  The WA420 units have six-cylinder, four-stroke diesel engines. In the WA420-3 model, the net engine power is 143 kW, or about 192 HP at 2,000 RPM. For the WA420-3E0 model, the makes and models of the engine are exactly the same as the WA420-3, but the net engine power is a bit higher at 156 kW, or 209 HP.

• Operating Load

  The rated operating load is 3,500 kg for both the WA420-3 and WA420-3E0 models.

• Bucket Capacity

  The bucket capacity of the WA420-3 model is 2.3 m3. The WA420-3E0 model's is larger at 2.6 m3.

• Overall Length

  The overall length is 7,586 mm for the WA420-3 model and 7,727 mm for the WA420-3E0 model.

• Overall Width

  The overall width is 2,600 mm for the WA420-3 model and 2,640 mm for the WA420-3E0 model.

• Overall Height

  The overall height is 3,185 mm for the WA420-3 model and 3,270 mm for the WA420-3E0 model.

Maintenance

There are some crucial Komatsu WA420 maintenance tips to help the machine last a long time and work efficiently.

• First of all, always follow the WA420 wheel loader maintenance schedule to a tee. This schedule is in the service and operation manuals. Use the schedule to find out which maintenance tasks need to be done at what intervals.
• Regularly inspect the entire machine closely. The operator or maintenance technician should look for signs of wear, potential damage, and leakage. Schedule repairs for any parts that are worn out, damaged, or leaking.
• Check all fluid levels frequently. This includes coolant, fuel, oil, and hydraulic fluid. Ensure they are always at the right level as per specifications.
• Change the fluids as needed based on usage. This helps to keep the performance of the Komatsu WA420 at its peak.
• Inspect the condition of all filters, especially the air and hydraulic filters. Replace them if they are dirty or clogged to prevent any blockages.
• Monitor the performance of components of the wheel loader. Some examples are the tires, buckets, brakes, and transmissions. Look out for any strange signs or deviations. Address them promptly to avoid bigger issues down the road.
• For Komatsu loaders with an electronic connection, check the cables. Ensure that they are still in good condition and secure. Follow the maintenance schedule for battery checks and servicing too.
• Finally, when performing any maintenance tasks, always adhere to strict safety standards. This helps to keep the maintenance crew and operators safe from harm.

Scenarios of komatsu 420

The Komatsu 420 flail cutter has several application scenarios in various industries:

• In the green management of municipal and park forests, the Komatsu 420 can be used for daily cleaning of the forest floor, cutting of undergrowth and shrubs, and treatment of tree crown overexposure. It can also be used to eradicate weeds along forest roads and in the park, clear the fire belts in the forest area, and reduce the pest infestation in the park and forest. This maintains the ecological environment in the park and forest and reduces the risk of forest fires.
• In the farmland, the Komatsu 420 can be used to clear branches and weeds, treat the straw after harvesting, and level the ground. Its operation improves the quality of farmland, promotes the growth of crops, and increases agricultural production efficiency.
• In the transportation industry, the Komatsu 420 can be used for road greening and road tree pruning. It can also be used to clean up vegetation along the railway and road, clear the fire belts along the railway and road, and maintain the traffic facilities and smooth lines. These operations ensure the safety of transportation and the cleanliness of the road environment.
• In the construction of power facilities, the Komatsu 420 can be used for vegetation clearance in power engineering, fire belt clearing, pipeline corridor clearance, etc. Its operation lays a solid foundation for the construction and maintenance of power facilities.
• In the mining industry, the Komatsu 420 can be used for land leveling, vegetation clearing, and mine maintenance. Its operation provides a convenient site for subsequent mining operations.
• In the land consolidation and reclamation projects, the Komatsu 420 can be used for land leveling and vegetation clearance, soil breaking, and consolidation of the reclaimed land. Its operation improves the quality of reclaimed land and provides a solid foundation for subsequent construction projects.
• In the garden landscape construction, the Komatsu 420 can be used for pruning, ground cleaning, and branch shredding. Its operation improves the quality of garden landscapes and beautifies urban environments.
• In the forest fire management, the Komatsu 420 can be used to clear fire belts, remove flammable plants, and prepare for fire prevention and control. Its operation reduces the risk of forest fire disasters.

How to choose Komatsu 420

Buying a used Komatsu 420 requires research and inspection.

• Know the machine

  Understand the specifications of the Komatsu 420. If possible, talk to owners of the used machines. They can tell the buyer about the things to expect from the equipment.

• Check online listings

  Websites and online marketplaces connect buyers to sellers of used heavy equipment. Many sellers list their equipment on several platforms. So, check many platforms and compare prices and deals from different sellers.

• Inspect before purchase

  A virtual inspection of the bulldozer is not enough. When the seller ships the equipment, inspect it properly before making the final payment. Check the undercarriage, tracks, and blade. Look for visible damages or excess wear. Ensure all hydraulic lines are intact. Examine the engine and check the fluid levels. Also, check the hour meter readout. It shows the number of hours the machine had been operating. Further, take the equipment on a test run. Listen to the working sound of the engine and other parts. The test run allows buyers to notice possible issues with the dozer.

• Negotiate the price

  After a thorough inspection, use findings to negotiate a fair price. Point out issues in the bulldozer and estimate repair costs. A seller will be open to negotiation when they know the buyer has enough knowledge about the machine.

FAQ

Q1: Does the Komatsu 420 dozer have GPS capabilities?

A1: Yes, the Komatsu 420 dozer has GPS capabilities. The machine already has a facility that allows GPS components to be fitted, which enables intelligent and automated grading solutions.

Q2: What kind of tracks does the Komatsu 420 dozer have?

A2: The Komatsu 420 uses metal tracks. The wide metal tracks help distribute the weight of the machine over a larger surface area to reduce ground pressure and improve traction, stability, and maneuverability.

Q3: What is the horsepower of the Komatsu 420 dozer?

A3: The horsepower rating of the Komatsu 420 dozer is 100 HP.

Q4: What is the lift capacity of the Komatsu 420 dozer?

A4: The operating capacity of the Komatsu 420 dozer is to move 8,000 to 10,000 pounds of dirt, and its maximum lift is 16,542 lbs.